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拨打iphone指南针的机芯

[英]dial movement for compass in iphone

原文 2011-05-09 08:29:22 5 1 iphone/ objective-c/ ios4/ xcode4/ compass-geolocation

I got a magnetic heading value from a compass. 我从指南针得到了磁航向值。 Now I need to rotate the needle based on the heading(angle) from that. 现在我需要根据标题（角度）旋转针头。 Please someone guide me how to do this. 请有人指导我如何做到这一点。

Thanks Prior... 先谢谢......

1 个解决方案

You can always transform (rotate) your layer (compass) with CGAffineTransformMakeRotation. 您始终可以使用CGAffineTransformMakeRotation转换（旋转）图层（指南针）。 For further reference take a look at this question . 如需进一步参考，请查看此问题。

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